1423377666 has 96 divisors (see below), whose sum is σ = 3464285760. Its totient is φ = 419724288.

The previous prime is 1423377611. The next prime is 1423377671. The reversal of 1423377666 is 6667733241.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 795625 + ... + 797411.

It is an arithmetic number, because the mean of its divisors is an integer number (36086310).

Almost surely, 2^1423377666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423377666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1732142880).

1423377666 is an abundant number, since it is smaller than the sum of its proper divisors (2040908094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423377666 is a wasteful number, since it uses less digits than its factorization.

1423377666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968 (or 1965 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The square root of 1423377666 is about 37727.6777180891. The cubic root of 1423377666 is about 1124.8813480790.

The spelling of 1423377666 in words is "one billion, four hundred twenty-three million, three hundred seventy-seven thousand, six hundred sixty-six".